Product Description
ISO 4033 hexagon nut, M16, Article number 40331216. Property class / material: steel class 12, surface finish plain. Hexagon Nut manufactured to ISO 4033 with ISO metric (M) thread, coarse pitch, fully threaded. Standard parts to the same standard, property class, dimensions and surface finish are interchangeable between manufacturers; confirm the controlling standard revision, any class-society or application approval, and the mating thread before substitution.
Technical Specifications
- Standard
- ISO 4033
- Property class / grade
- CL.12
- Class (detailed)
- CL.12
- Thread type
- M
- Thread diameter
- 16 mm
- Pitch
- 2 mm
- Thread pitch class
- Coarse
- Thread direction
- Right
- Threading
- Fully Threaded
- Key width (across flats)
- 24 mm
- Surface treatment
- Plain (no plating)
- Surface treatment code
- PLAIN
- Nut thickness
- 16.4 mm
- Thread standard
- ISO metric (M)
- Article number
- 40331216
- Category
- Nuts / Hexagon Nuts
Standards & Compliance
- Standard
- ISO 4033
- Size / Series
- M16
- Material
- Steel class 12
- Thread Standard
- ISO metric (M)
- HS Code
- 731816
Product Documentation
More from Bufab
Bufab
ISO 4033 Hexagon Nut, Steel class 12, M20, Plain
40331220
Bufab
ISO 4033 Hexagon Nut, Steel class 12, M24, Plain
40331224
Bufab
ISO 4033 Hexagon Nut, Steel class 8, M5, Zinc Plated
40338051
Bufab
ISO 4033 Hexagon Nut, Steel class 8, M6, Zinc Plated
40338061
Bufab
ISO 4033 Hexagon Nut, Steel class 8, M8, Zinc Plated
40338081
Bufab
ISO 4033 Hexagon Nut, Steel class 8, M10, Plain
4033810
Bufab
ISO 4033 Hexagon Nut, Steel class 8, M12, Plain
4033812
Bufab
ISO 4033 Hexagon Nut, Steel class 8, M16, Plain
4033816
Technical guides
Catalogue entry last verified: 2026-09-30. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy 40331216?
- 40331216 can be ordered from cballast.com as a Bufab catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
- What is the manufacturer part number for this Bufab product?
- The manufacturer part number is 40331216.
- What is the HS code for 40331216?
- The customs tariff (HS) code for 40331216 is 731816.
- Who manufactures 40331216?
- 40331216 is a Bufab product in the C-Parts range.
- Is a datasheet available for 40331216?
- Yes — the 40331216 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 40331216?
- The minimum order quantity is 1.
- Is 40331216 available?
- Yes — 40331216 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).